Like-for-like sales in the United Kingdom and Ireland rose 3% in the ten weeks to 6 January compared to the same period previous year, but the statement revealed a squeeze on profit margins at the group, which owns Carphone Warehouse and Currys PC World.
Dixons narrowed its guidance for the year ending on April 29, saying it expects to deliver headline pretax profit in a range of GBP365.0 million to GBP385.0 million for the year ending in April.
Elizabeth Fagan, who has led Boots since June 2016, will continue working with the Company and will take on the newly created role of Non-Executive Chairman of Boots in the new fiscal year.
"Our UK mobile business had a strong sales period helped by better iPhone X availability and we grew share in SIM free and SIM only over the period", said James.
But Mr James said market conditions meant that its profit margins in the mobile phone business "continue to be challenged".
Alex Baldock is now Group Chief Executive of Shop Direct plc, the UK's second largest pure-play online retailer, a position which he has held since 2012.
He said that an early Easter, the launch of a new Samsung phone and a promotion around the World Cup all have the potential to boost performance over the coming months.
Livingstone added: "Seb has made an outstanding contribution to both the creation and success of Dixons Carphone".
He has been credited for the Shop Direct's five consecutive years of rising sales and profits, including the underlying pre-tax profits jump of 10.2 per cent to £160.4 million and revenues increase of 14.6 per cent to £1.26 billion in the fiscal year ending July 1. The group is now the market leader in eight countries.
"On behalf of the Board and all our colleagues, I would like to thank Seb for all that he has done over the past six years as CEO of first Dixons Retail and now Dixons Carphone".
"We wanted Alex for his strategic clarity, relentless execution and his ability to inspire people to get behind him at every step".